Pump



April 24, 1928.

M. H. WlLDE PUMP Filed Oct. l2, 1926' Patented Apr. 24, 1928.

MIFFLN H. WILDQQFQMARTINSBURG, WEST VIRGNIA.

TUM?.

f-Applieaunn mea:romania-11926. seriarno. '141,153.- v

. .now employed.

Anotherobfectof ftheinventi'on isnt-erprovide `in :a Jpump vofdtlieclass 'fmentionemea novel-form :ofzspistonf whichan lifts operatlon will-function `more feffectually lthan, such' pis-` i :tons 1as-ordi narily construutediiand will fre- -quireflessi powervfon. tsf reuiprocation In the accompanyingtdrawings; Firgure L v1s weide elevat-ionota `.pumpiernbodying the present invention.`

`Figure -21is La; vertical f sectional rview therethrough.

Figure 3 is a horizontal sectional view taken substantially on the line 3,-3 of Figure l, looking in the direction indicated by the arrows.

The pum embodying the invention comprises a cy inder indicated by the numeral 1, to the upper end of which is'tted'a head 2 preferably threaded into place, and a packing gasket 3 is provided between the head and the upper end of the cylinder 1. The head 2 is provided centrally with an opening 4 slidably accommodating thepiston of the pump, which is indicated inv general by the numeral 5. The said piston comprises a hollow cylindrical body 6 to theupper end of which is threadeda head 7 carrying a socket 8 in which is arranged a ball 9 at the lower end ofa connecting rod 10 connected at its upper end' to a crank 11 on a. shaft 12;

driven from any suitable source of power, or

the connecting rod may be connected with ak pump handle to be manually operated. Guides 13 are supported at diametrically oppositesides of the head 2 and extend 'up-A wardly therefrom in parallel relationv to each other, and a cross head 14 which is lixedupon the head 7 is provided at its ends with recesses 15 slidably litt-ing the said guides 13.

The numeral 16 indicates ahead which is removably threaded onto the lower end of the piston body 5 and this. headis provided centrally with anfopening or port 17 normally closed by a gravitygactuated valve 18 which is preferably a flap valve, A partition 19 is provided within the body 6 of the piston 5 above the head `16 and a suitable number of ports 20V are formedin the wall of the body 6 at diametrically opposite sides thereof and between the head 16 andl the vpartition 19. 'Dhe' numeral I'2li indicates ane elbow'fwhich is .threaded onto the lower enduofithe:cylinder liand into the horizontal. branohsfof this elbow lthere :is threaded 4ahead/22 lhavingzja Water .intake opening 23 Vtherein".adapted to `be closed by ajgra'vity e actuated valve"24 lwhich y is also preferably ranfiap wvalve. The numjeral25 indicates a .removable pipe v`which .Wlienin use is thread# ed @into wthe upper iside of the ilorizontal branch rofftheielbow b21 vand i this pipe .is .provided with ajjet 26 at its upper `end and ffw-ith `a; manuallyto-perable cut-oft' valve 27 i which ,may;.bexadjustedy solas toycontrolr'the `.admis- .sion ofiair .to :theipipe:25,1andfinto thelelbow -21ethrough2 the jetf26, the lower? portion lofv the cylinder lV and the elbow being subn merged in the water or other liquid to tbe pumped, as will be observed by 'reference to Figure 2. An inwardly opening checklvalve is provided inthe jet 26 to prevent expel-` i piston moves downling of air kwhen' the Wardly.

A short pipe 28 is threaded into one side of theycylinder l near the upperend thereof and communicates withthe casingeof a man-r ually operable cut olf valve 29 from which casing there leads a pipeBO yfor conducting the water to the plate` whereit is tofbe delivered. n, e

From the foregoing description of the in-v ventlon, it will vbe evident that as the piston 5 moves downwardly in the vcylinder 1, the e valve 24 will be closedand water will enter pastthe valve 18, and will flow throughthe ports20`and into the space between the piston and the wall of the cylinder. On the lupstroke 1of the piston the valve`24= will be eachf down stroke and," by making the rparts in the proper proportions, the dischargemay be equal on the twoistrokes. The flow at the end of the dischargepipe is continuous when the pump is in full operation. On the they chamber 31 which yis provided between the headr 16 and partition 19 of the piston,`

upstroke of the pist-on 5, air will be drawn into the elbow 2l through the pipe 25, thus aerating the water. Y

Having thus described the invention, what l claim is: A'

l. A puinp comprising a cylinderl open at its lower end and having an outlet adjacent its upper' end, a head for the upper end of said cylinder, a piston extending through said head into saidy cylinder' and adapted to niove fluid into the cylinder through the open lower end thereof and torce Atheiluid through the outlet when the piston is recipn rocated, an elbow having one end connected with the lower end ol said cylinder, a head removably connected with the other end of saidelbow and formed with an inlet opening7 an inwardly opening closure for said inlet, a valve controlled air inlet pipe leadingitroni said elbow, and means for reciprocating said piston. i

24A pump comprising av cylinder open at its lower end, a head for the upper end olf said cylinder, a. piston extending through said headI into said cylinder in spaced relaree-7,1%

tion to the walls yof the cylinder, a transverse partition in said piston forming a lower chamber therein, a head at the lower end ot said piston projecting radially thereiroin lforinedwith an inlet opening, an inwardly opening closurefor the inlet opening, a valve controlled air inlet pipe leading from said elbow, and means for imparting reciprocating motion to said piston. f v f In testimony whereof Iaffix my signature.

1 MIFFL'IN, H. WILDE. [L si; 

